<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>bootstrap</title>
    <link rel="stylesheet" href="bootstrap/css/bootstrap.min.css">
    <script src="jquery/jquery-3.3.1.js"></script>
    <script src="bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
    <nav class="">
        <ul class="pager">
            <li class="previous"><a href="#">向左</a></li>
            <li class=""><a href="#">向右</a></li>
        </ul>
        <ul class="pagination pagination ">
            <li class="active"><a href="###">1</a></li>
            <li><a href="###">2</a></li>
            <li><a href="###">3</a></li>
            <li><a href="###">4</a></li>
            <li><a href="###">5</a></li>
        </ul>

    </nav>
</body>
</html>